CN112952623A - Intelligent power distribution cabinet and method for monitoring power distribution cabinet - Google Patents
Intelligent power distribution cabinet and method for monitoring power distribution cabinet Download PDFInfo
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- CN112952623A CN112952623A CN202110438332.8A CN202110438332A CN112952623A CN 112952623 A CN112952623 A CN 112952623A CN 202110438332 A CN202110438332 A CN 202110438332A CN 112952623 A CN112952623 A CN 112952623A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/40—Display of information, e.g. of data or controls
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention relates to the technical field of power distribution cabinets, in particular to an intelligent power distribution cabinet and a method for monitoring the power distribution cabinet, wherein the intelligent power distribution cabinet comprises a cabinet body, a wire row and a controller; after the fan preinstalled on the power distribution cabinet runs for a long time, dust impurities can be doped into the fan through the heat dissipation seam on the power distribution cabinet to cause blockage, so that the heat dissipation performance is weakened, and the cleanliness of the interior of the power distribution cabinet is reduced; therefore, the diaphragm plate arranged in the insulating shell is driven by the oil cylinder to bring the cavity space change of the cooling water solution, so that the cavity pressure of the cooling water changes, the heat conducting plate is in a state similar to adiabatic expansion when absorbing heat, and the volume of the diaphragm plate in the insulating shell is compressed and recovered after the cooling water solution flows back, so that the heat effect process similar to adiabatic expansion in Carnot circulation is realized, the heat exchange ratio of the cooling water solution is improved, the temperature control function in the cabinet body is ensured, and the operation effect of the intelligent power distribution cabinet is improved.
Description
Technical Field
The invention relates to the technical field of power distribution cabinets, in particular to an intelligent power distribution cabinet and a method for monitoring the power distribution cabinet.
Background
The power distribution cabinet has the main functions of distributing electric energy and controlling the use of the electric energy, and also puts higher requirements on the power supply quality along with the development of electric equipment, and meanwhile, the quality of each aspect of performance of the power distribution cabinet directly influences the power supply quality of the whole power grid; with the progress of the technology level, favorable conditions are created for the development of the power distribution cabinet, and the development of the field bus and the industrial internet of things technology also provides a favorable platform for the development of the power distribution cabinet towards the intelligent direction.
The switch board is detecting after its inside component's temperature reaches early warning threshold value condition, can get into the power-off protection state, and then disturb the operation of electrical equipment on the switch board circuit, and the fan of last pre-installation of switch board is after long-time operation, can mix into the dust impurity through the heat dissipation seam on the switch board and cause the jam, heat dispersion has been weakened and the inside cleanliness factor of switch board has been reduced, and install the switch board in the low temperature indoor environment of air conditioner, the cost of putting up of switch board has been increased, and can form the difference in temperature layering among the indoor environment, for the temperature rise of the inside higher position components and parts of control switch board, the increased refrigerating output has aggravated the operation cost of switch board.
Some technical schemes related to an intelligent power distribution cabinet and a method for monitoring the power distribution cabinet also appear in the prior art, for example, a Chinese patent with the application number of CN201910813060.8 discloses an intelligent monitoring type high-low voltage power distribution cabinet and a monitoring method thereof, wherein the intelligent monitoring type high-low voltage power distribution cabinet comprises a cabinet body, a composite rotary power distribution equipment frame, a wind direction tracking air-cooling heat dissipation device, a fire-fighting fire extinguishing device and a main control room terminal; the composite rotary type power distribution equipment frame comprises a rotating shaft frame, a first servo motor, an electrical component mounting plate and a second servo motor; the side-view monitoring probe is used for monitoring the electrical components on the multiple electrical component mounting plates which are arranged in a stacked mode from a side-view direction; the second servo motor drives the corresponding electrical component mounting plate to rotate to a position right below the overlooking monitoring probe, so that the overlooking monitoring probe can monitor the electrical component on the electrical component mounting plate from the overlooking direction; the intelligent monitoring type high-low voltage power distribution cabinet and the monitoring method thereof provided by the technical scheme have the advantages that monitoring is relatively comprehensive, and the working safety of each electrical component in the high-low voltage power distribution cabinet is effectively ensured; but the inside dust impurity that can mix into in the external environment of switch board that this technical scheme adopted influences the degree of accuracy to switch board parameter monitoring then.
In view of this, the invention provides an intelligent power distribution cabinet and a method for monitoring the power distribution cabinet, which solve the technical problems.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides an intelligent power distribution cabinet and a method for monitoring the power distribution cabinet, the diaphragm plate arranged in the insulating shell is driven by an oil cylinder to bring the change of the cavity space of the cooling water solution, so that the cavity pressure of the cooling water changes, the heat conducting plate is in a state similar to adiabatic expansion when absorbing heat, and after the cooling water solution flows back, the volume recovered by compression in the insulating shell of the diaphragm plate plays a thermal effect process similar to adiabatic expansion in Carnot circulation, the heat exchange ratio of the cooling water solution is improved, the temperature control function in the cabinet body is ensured, and the operation effect of the intelligent power distribution cabinet is improved.
The invention relates to an intelligent power distribution cabinet which comprises a cabinet body, a wire row and a controller; a wire row for assembling cables is arranged in the cabinet body, a heat dissipation fan is further mounted in the cabinet body above the wire row, and a sensor for monitoring the temperature of the wire row is further mounted in the wire row; an interactive display screen is also arranged in the cabinet body; the top end of the inner wall of the cabinet body is provided with a heat conducting plate, and the heat conducting plate is also provided with an insulating shell towards the direction of the outer side of the cabinet body; the insulation shell is in close contact with the heat conducting plate to form a cavity, a sliding diaphragm plate is further arranged in the insulation shell, the diaphragm plate divides the interior of the insulation shell into an upper cavity and a lower cavity which are independent, and cooling water solution is filled in the cavities; the top of the insulating shell is provided with an oil cylinder, and the oil cylinder is used for driving the diaphragm plate to move in the insulating shell; the two sides of the cavity of the insulating shell are respectively provided with a one-way water outlet valve and a one-way water inlet valve, and the water outlet valve and the water inlet valve are provided with communicated circulating pipes on the outer side of the insulating shell; the circulating pipe is attached to the surface of the cabinet body, wraps the cabinet body in a U shape and is also provided with a circulating pump at the bottom of the cabinet body; the controller is used for adjusting the operation of the power distribution cabinet;
in the prior art, after a power distribution cabinet detects that the temperature of an internal element of the power distribution cabinet reaches an early warning threshold condition, the power distribution cabinet enters a power-off protection state and further interferes with the operation of electrical equipment on a circuit of the power distribution cabinet, and after a fan preassembled on the power distribution cabinet runs for a long time, dust impurities are doped into a heat dissipation gap on the power distribution cabinet to cause blockage, so that the heat dissipation performance is weakened, and the cleanliness of the interior of the power distribution cabinet is reduced;
therefore, the invention conducts the heat generated by the operation of the power distribution cabinet through the heat conducting plate arranged in the cabinet body, when the temperature in the line bank is detected to rise to a set early warning value by the sensor, the heat radiating fan is started by the controller, the hot air flow in the power distribution cabinet is blown to the heat conducting plate at the top area, the heat of the hot air is conducted to the cooling water solution filled in the insulating shell through the heat conducting plate, the diaphragm plate in the insulating shell is lifted under the driving of the oil cylinder, the cavity of the cooling water solution is enlarged, then the water outlet valve is opened, the cooling water absorbing the heat enters the circulating pipe, the heat in the cooling water is gradually conducted out in the flowing process of the inner wall of the circulating pipe, then the cooling water flows back to the insulating shell through the water inlet valve under the driving of the circulating pump, the absorption effect of the heat conducting plate is recovered, and the oil cylinder is controlled to drive the plate to, reducing the cavity of the cooling water solution, reversing the heat dissipation fan, blowing the gas in the top area of the cabinet body downwards to achieve the thermal circulation effect of the airflow in the cabinet body, and configuring the operation parameters of the power distribution cabinet by an interactive display screen in the cabinet body; the invention utilizes the diaphragm plate arranged in the insulating shell to bring the cavity space change of the cooling water solution under the driving of the oil cylinder, so that the cavity pressure of the cooling water changes, the heat conducting plate is in a state similar to adiabatic expansion when absorbing heat, and the volume of the diaphragm plate in the insulating shell is compressed and recovered after the cooling water solution flows back, thereby playing a thermal effect process similar to adiabatic expansion in Carnot cycle, improving the heat exchange ratio of the cooling water solution, ensuring the temperature control function in the cabinet body, and further improving the operation effect of the intelligent power distribution cabinet.
Preferably, the bottom surface of the heat conducting plate is also provided with an arc-shaped shallow groove, and the shallow groove corresponds to the position of the heat radiating fan in the cabinet body; a flat end surface is also left between the shallow groove and the edge of the heat conducting plate, and the heat conducting plate is provided with standing fins on the flat end surface of the edge; when the cabinet works, the gas in the cabinet body is blown to the direction of the heat conducting plate under the action of the heat radiating fan and generates heat conduction after contacting the heat conducting plate; through the shallow slot of seting up on the bottom surface of heat-conducting plate, make the air current that contacts the heat-conducting plate follow the cambered surface of shallow slot upwards the loss and come out towards week, the air current that avoids turning back from the heat-conducting plate interferes the air current that blows off in the heat dissipation fan, dredge the heat dissipation fan flow direction top of the internal portion higher temperature of cabinet, subside on the cabinet side wall of shallow slot circumference again after the cooling, maintain the circulation state of the internal portion air current of cabinet, and the fin that erects the setting has strengthened the dredging effect to the air current, the air current that makes the internal portion of cabinet cooling is in balanced distribution state at the settlement in-process, ensure the thermal conduction effect of the internal portion of cabinet, thereby the operation effect of intelligent power distribution cabinet has been.
Preferably, the bottom of the cabinet body is also provided with a centrifugal fan, and an air port of the centrifugal fan faces the surface of the circulating pipe at the bottom of the cabinet body; the circulating pipe is flat at the bottom of the cabinet body, and a gap is reserved between the surface of the circulating pipe and the air port; when in work, the heat exchange efficiency of the cooling water solution in the circulating pipe is kept; the circulating pipe through with cabinet body bottom warp and is the platykurtic, the surface area of reinforcing circulating pipe, the centrifugal fan of cooperation installation in cabinet body bottom, make its wind gap blow to the air current of circulating pipe produce the negative pressure region in the bottom of the cabinet body, and make the gas in the environment guide the circulating pipe under the negative pressure effect in the space between wind gap and circulating pipe, the amount of wind of circulating pipe department has been increased, and utilize the lower height of lower temperature gas in the environment, further strengthened the heat exchange capacity of circulating pipe to cooling water solution, the cooling effect to the internal portion of cabinet is maintained, thereby the operation effect of intelligent power distribution cabinet has been promoted.
Preferably, the cabinet body is further provided with a through hole for installing a cable, and the through hole is provided with an annular lamination; the edge of the lamination is also provided with a rotating ring, the lamination is fixed on the through opening through the ring, and the size of the through opening is matched with the cable by adjusting the overlapping state of the lamination; sealing cement gum is filled in a gap between the through opening and the cable; when the cabinet works, the cabinet body radiates heat through the heat conducting plate and the external circulating pipe, and a gap is generated at a through hole of a cable arranged in the power distribution cabinet on the cabinet body, so that dust and impurities in the external environment enter the cabinet body, and the cleanness of the operating environment of the cabinet body is reduced; through the sealed clay that sets up in the opening, resume the leakproofness of the cabinet body to utilize the lamination of installation on the opening, make its rotation in the ring change the cyclic annular mouth size of lamination, keep the cable conductor gesture of lining up in the opening, and increased adnexed area for the sealed clay of filling, strengthened the stability of clay in the opening, thereby promoted intelligent power distribution cabinet's operation effect.
Preferably, a fixed rubber ring is further arranged on a door frame of the cabinet body, the rubber ring is of a shell structure, and an opening is formed in the direction facing a cabinet door of the cabinet body; the circumferential direction of the cabinet door is also provided with a raised line, and the cabinet door extends into the opening of the rubber ring through the raised line in a closed state; when the sealing device works, the gap between the cabinet body and the cabinet door enables gas in the cabinet body to expand and contract under the temperature change state, external dust is adsorbed into the cabinet body, and the sealing ring is directly arranged on the cabinet door to enable the inside of the cabinet body to be in a closed state, so that the micro expansion and contraction of the gas caused by the temperature change in the cabinet body affect the sealing performance of the sealing daub at the cable port; through setting up the rubber ring at cabinet body door frame department shell structure, cooperate the opening that sets up on it, the deformation that makes the rubber ring provides the surplus of breathing for the internal gas of cabinet, when keeping the internal portion of cabinet in airtight state, the airtight problem that the internal gas breathing of cabinet influences sealed daub structure has been weakened, and the cabinet door utilizes its ascending sand grip in week, guarantee that the rubber ring on the closed back cabinet body still has the space of deformation, make the internal element of the cabinet body be in stable encapsulated situation when the operation, and then maintain the control accuracy to the internal temperature of cabinet, thereby the operation effect of intelligent power distribution cabinet has been promoted.
The method for monitoring the power distribution cabinet is suitable for the intelligent power distribution cabinet, and comprises the following steps:
s1, power configuration: the state of the power distribution cabinet in the operation process is fed back to the interactive display screen, and in the process of the power distribution cabinet for configuring and changing the circuit power, the sensors arranged in the line bank record the temperature parameters measured under different powers to form temperature change curves of the power distribution cabinet in different operation states;
s2, heat accumulation cycle: when the temperature change curve measured in the S1 is monitored by the sensor to rise to the early warning threshold, the heat dissipation fan in the cabinet body is started, so that the gas heated in the line exhaust area circulates in the cabinet body, and when the airflow contacts the heat conduction plate at the top of the cabinet body, the heat in the airflow is conducted to the cooling water solution to maintain the temperature level in the cabinet body;
s3, heat effect conduction: in the heat accumulation circulation process in S2, when the temperature curve is monitored to be still in a rising state, a centrifugal fan at the bottom of the cabinet body, an oil cylinder on an insulating shell, a water outlet valve and a water inlet valve on two sides of the oil cylinder are started, and the operation of a circulation pump is matched, so that the heat at the position of the heat conducting plate is dissipated to the external environment through the circulation of cooling water solution in a circulation pipe, and the temperature level in the cabinet body is ensured;
s4, frequency conversion regulation: in the cooling process in S2-S3, the operating power of the heat dissipation fan and the centrifugal fan is adjusted according to the monitored temperature curve change, so that the temperature change in the cabinet body is maintained in a set fluctuation range, and the energy consumption required for maintaining the temperature level of the power distribution cabinet is reduced.
The invention has the following beneficial effects:
1. the diaphragm plate arranged in the insulating shell enables the diaphragm plate to bring cavity space change of cooling water solution under the driving of the oil cylinder, so that the cavity pressure of the cooling water changes, the diaphragm plate is in a state similar to adiabatic expansion when a heat conducting plate absorbs heat, and the volume of the diaphragm plate in the insulating shell is compressed and recovered after the cooling water solution flows back, so that a thermal effect process similar to adiabatic expansion in Carnot circulation is achieved, the heat exchange ratio of the cooling water solution is improved, and the temperature control effect in the cabinet body is ensured.
2. According to the cabinet, the shallow grooves are formed in the bottom surface of the heat conducting plate, so that airflow contacting the heat conducting plate escapes upwards along the arc surfaces of the shallow grooves in the circumferential direction, and the upright fins enhance the dredging effect on the airflow and ensure the conduction effect of heat inside the cabinet body; the circulating pipe at the bottom of the cabinet body is deformed into a flat shape, the surface area of the circulating pipe is enhanced, and the centrifugal fan is matched with the circulating pipe and arranged at the bottom of the cabinet body, so that the heat exchange capacity of the circulating pipe on cooling water solution is enhanced, and the cooling effect on the interior of the cabinet body is maintained.
3. According to the invention, the sealing daub arranged in the through opening is matched with the lamination arranged on the through opening, so that the posture of a cable penetrating through the cabinet body is kept; the rubber ring is arranged on the shell structure at the door frame of the cabinet body and matched with the opening arranged on the rubber ring, so that the deformation of the rubber ring provides expansion allowance for the gas in the cabinet body, the internal elements of the cabinet body are in a stable sealing state during operation, and the control precision of the temperature in the cabinet body is further maintained.
Drawings
The invention is further described with reference to the following figures and embodiments.
FIG. 1 is a flow chart of a method of monitoring a power distribution cabinet in accordance with the present invention;
FIG. 2 is a perspective view of the intelligent power distribution cabinet of the present invention;
fig. 3 is a cross-sectional view of the components of the intelligent power distribution cabinet of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 2 at A;
FIG. 5 is an enlarged view of a portion of FIG. 2 at B;
FIG. 6 is an enlarged view of a portion of FIG. 3 at C;
FIG. 7 is an enlarged view of a portion of FIG. 3 at D;
in the figure: the cabinet comprises a cabinet body 1, a centrifugal fan 11, an air opening 111, a through opening 12, a lamination sheet 121, a ring 122, sealing plaster 123, a rubber ring 13, an opening 131, a cabinet door 14, a convex strip 141, a wire row 2, a radiating fan 21, an interactive display screen 3, a heat conducting plate 4, a shallow groove 41, fins 42, an insulating shell 5, a diaphragm plate 51, a cooling water solution 511, an oil cylinder 52, a circulating pipe 6 and a circulating pump 61.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 7, the intelligent power distribution cabinet of the present invention includes a cabinet body 1, a line bank 2 and a controller; a wire row 2 for assembling a cable is arranged in the cabinet body 1, a heat dissipation fan 21 is further installed in the cabinet body 1 above the wire row 2, and a sensor for monitoring the temperature of the wire row 2 is further installed in the cabinet body; an interactive display screen 3 is also arranged in the cabinet body 1; the top end of the inner wall of the cabinet body 1 is provided with a heat conducting plate 4, and the heat conducting plate 4 is also provided with an insulating shell 5 towards the direction of the outer side of the cabinet body 1; the insulating shell 5 is in close contact with the heat conducting plate 4 to form a cavity, a sliding diaphragm plate 51 is further arranged in the insulating shell 5, the diaphragm plate 51 divides the interior of the insulating shell 5 into an upper cavity and a lower cavity which are independent, and cooling water solution 511 is filled in the cavities; the top of the insulating shell 5 is provided with an oil cylinder 52, and the oil cylinder 52 is used for driving the diaphragm plate 51 to move in the insulating shell 5; the two sides of the cavity of the insulating shell 5 are respectively provided with a one-way water outlet valve and a one-way water inlet valve, and the water outlet valve and the water inlet valve are provided with a communicated circulating pipe 6 on the outer side of the insulating shell 5; the circulating pipe 6 is attached to the surface of the cabinet body 1, the circulating pipe 6 wraps the cabinet body 1 in a U shape, and the circulating pipe 6 is also provided with a circulating pump 61 at the bottom of the cabinet body 1; the controller is used for adjusting the operation of the power distribution cabinet;
in the prior art, after a power distribution cabinet detects that the temperature of an internal element of the power distribution cabinet reaches an early warning threshold condition, the power distribution cabinet enters a power-off protection state and further interferes with the operation of electrical equipment on a circuit of the power distribution cabinet, and after a fan preassembled on the power distribution cabinet runs for a long time, dust impurities are doped into a heat dissipation gap on the power distribution cabinet to cause blockage, so that the heat dissipation performance is weakened, and the cleanliness of the interior of the power distribution cabinet is reduced;
therefore, the invention conducts the heat generated by the operation of the power distribution cabinet through the heat conducting plate 4 arranged in the cabinet body 1, when the temperature in the wire row 2 is detected by the sensor to rise to a preset early warning value, the heat radiating fan 21 is started through the controller, the hot air flow in the power distribution cabinet blows to the heat conducting plate 4 at the top area, then the heat of the hot air is conducted to the cooling water 511 filled in the insulating shell 5 through the heat conducting plate 4, meanwhile, the diaphragm plate 51 in the insulating shell 5 is lifted under the driving of the oil cylinder 52, the cavity of the cooling water 511 is enlarged, then the water outlet valve is opened to enable the cooling water absorbing the heat to enter the circulating pipe 6, the heat in the cooling water is gradually conducted out in the flowing process of the inner wall of the circulating pipe 6, then the cooling water flows back to the insulating shell 5 through the water inlet valve under the driving of the circulating pump 61, and the absorption effect on the heat, after cooling water flows back to the insulating shell 5, the oil cylinder 52 is controlled to drive the diaphragm plate 51 to descend, so that the cavity of the cooling water solution 511 is reduced, the heat dissipation fan 21 is reversed, gas in the top area of the cabinet body 1 is blown downwards, the thermal circulation effect of airflow inside the cabinet body 1 is achieved, and the interactive display screen 3 in the cabinet body 1 is used for configuring the operation parameters of the power distribution cabinet; the invention utilizes the diaphragm plate 51 arranged in the insulating shell 5 to cause the cavity space change of the cooling water solution 511 under the drive of the oil cylinder 52, so that the cavity pressure of the cooling water changes, the heat conducting plate 4 is in a state similar to adiabatic expansion when absorbing heat, and after the cooling water solution 511 flows back, the volume of the diaphragm plate 51 compressed and recovered in the insulating shell 5 plays a heat effect process similar to adiabatic expansion in Carnot cycle, the heat exchange ratio of the cooling water solution 511 is improved, the temperature control function in the cabinet body 1 is ensured, and the operation effect of the intelligent power distribution cabinet is improved.
As an embodiment of the present invention, the bottom surface of the heat conducting plate 4 is further provided with an arc-shaped shallow groove 41, and the shallow groove 41 corresponds to the position of the heat dissipating fan 21 in the cabinet body 1; a flat end surface is also reserved between the shallow groove 41 and the edge of the heat conducting plate 4, and upright fins 42 are arranged on the flat end surface of the edge of the heat conducting plate 4; when the cabinet works, the air in the cabinet body 1 is blown to the direction of the heat conducting plate 4 under the action of the heat radiating fan 21, and generates heat conduction after contacting the heat conducting plate 4; through the shallow slot 41 of seting up on the bottom surface of heat-conducting plate 4, make the air current that contacts heat-conducting plate 4 along the cambered surface of shallow slot 41 upwards the escape in week, the air current that avoids turning back from heat-conducting plate 4 interferes the air current that blows off in the heat dissipation fan 21, dredge the heat-conducting plate 4 of the air current flow direction top of the heat dissipation fan 21 of the internal portion of cabinet 1 higher temperature, subside from the cabinet body 1 lateral wall of shallow slot 41 circumference again after the cooling, maintain the circulation state of the internal portion air current of cabinet 1, and upright the fin 42 that sets up has strengthened the effect of dredging to the air current, the air current that makes the internal portion of cabinet 1 in the cooling is in balanced distribution state at the settlement in-process, ensure the internal portion thermal conduction effect of cabinet, thereby the operation effect of intelligent.
As an embodiment of the present invention, the bottom of the cabinet 1 is further provided with a centrifugal fan 11, and an air outlet 111 of the centrifugal fan 11 faces the surface of the circulation pipe 6 at the bottom of the cabinet 1; the circulating pipe 6 is flat at the bottom of the cabinet body 1, and a gap is reserved between the surface of the circulating pipe 6 and the air opening 111; in operation, in order to maintain the heat exchange efficiency of the cooling aqueous solution 511 inside the circulation pipe 6; through the circulating pipe 6 deformation with cabinet body 1 bottom be the platykurtic, the surface area of reinforcing circulating pipe 6, the centrifugal fan 11 of cooperation installation in cabinet body 1 bottom, make its wind gap 111 blow to the air current of circulating pipe 6 and produce the negative pressure region in the bottom of cabinet body 1, and make the gas in the environment guide circulating pipe 6 under the negative pressure effect in the space between wind gap 111 and circulating pipe 6, the amount of wind of circulating pipe 6 department has been increased, and utilize the lower height of lower temperature gas in the environment, the heat exchange capacity of circulating pipe 6 to cooling water solution 511 has further been strengthened, maintain the cooling effect to cabinet body 1 inside, thereby the operation effect of intelligent power distribution cabinet has been promoted.
As an embodiment of the present invention, the cabinet 1 is further provided with a through hole 12 for installing a cable, and the through hole 12 is provided with an annular lamination 121; the edge of the lamination sheet 121 is also provided with a rotary ring 122, the lamination sheet 121 is fixed on the through opening 12 through the ring 122, and the size of the through opening 12 is matched with the cable wire by adjusting the overlapping state of the lamination sheet 121; a sealing plaster 123 is filled between the through hole 12 and the cable; when the cabinet works, the cabinet body 1 radiates heat through the heat conducting plate 4 and the circulating pipe 6 outside, and a gap is generated between a cable wire installed in the power distribution cabinet and a through hole 12 on the cabinet body 1, so that dust and impurities in the external environment enter the cabinet body 1, and the cleanness of the operating environment of the cabinet body 1 is reduced; through the sealed clay 123 that sets up in port 12, resume the leakproofness of the cabinet body 1 to utilize the lamination 121 of installation on port 12, make its rotation in circle ring 122 change the cyclic annular mouth size of lamination 121, keep the cable conductor gesture of lining up in port 12, and for the sealed clay 123 of packing increased adnexed area, strengthened the stability of clay in port 12, thereby promoted intelligent power distribution cabinet's operational effect.
As an embodiment of the present invention, a fixed rubber ring 13 is further disposed on a door frame of the cabinet 1, the rubber ring 13 is of a housing structure and is provided with an opening 131 in a direction toward a cabinet door 14 of the cabinet 1; convex strips 141 are further arranged on the circumferential direction of the cabinet door 14, and the cabinet door 14 extends into the opening 131 of the rubber ring 13 through the convex strips 141 in a closed state; when the sealing device works, the gap between the cabinet body 1 and the cabinet door 14 enables the gas in the cabinet body 1 to expand and contract under the temperature change state, so that external dust is absorbed into the cabinet body 1, and the sealing ring is directly arranged on the cabinet door 14 to enable the inside of the cabinet body 1 to be in a sealed state, so that the micro expansion and contraction of the gas caused by the temperature change in the cabinet body 1 affect the sealing performance of the sealing clay 123 at the cable port; through setting up the rubber ring 13 at cabinet 1 door frame department shell structure, cooperate the opening 131 that sets up on it, the deformation that makes rubber ring 13 provides the surplus of breathing for the gas of the internal portion of cabinet 1, when keeping the internal portion of cabinet 1 to be in airtight state, the airtight problem that the internal gas breathing of cabinet 1 influences sealed daub 123 structure has been weakened, and cabinet door 14 utilizes its ascending sand grip 141 in week, it still has the space of deformation to ensure rubber ring 13 on the closed back cabinet body 1, make the internal component of the cabinet body 1 be in stable encapsulated situation when the operation, and then maintain the control accuracy to the internal temperature of the cabinet body 1, thereby the operation effect of intelligent power distribution cabinet has been promoted.
The method for monitoring the power distribution cabinet is suitable for the intelligent power distribution cabinet, and comprises the following steps:
s1, power configuration: the state of the power distribution cabinet in the operation process is fed back to the interactive display screen 3, and in the process of the power distribution cabinet for configuring and changing the circuit power, the temperature parameters measured under different powers are recorded by the sensors arranged in the line bank 2, so that temperature change curves of the power distribution cabinet in different operation states are formed;
s2, heat accumulation cycle: when the temperature change curve measured in the step S1 is monitored by the sensor to rise to the early warning threshold, the heat dissipation fan 21 in the cabinet 1 is started to circulate the heated gas in the wire row 2 region inside the cabinet 1, and when the gas flow contacts the heat conduction plate 4 on the top of the cabinet 1, the heat in the gas flow is conducted to the cooling water solution 511 to maintain the temperature level inside the cabinet 1;
s3, heat effect conduction: in the heat accumulation circulation process in S2, when the temperature curve is monitored to be still in a rising state, the centrifugal fan 11 at the bottom of the cabinet 1, the oil cylinder 52 on the insulating shell 5 and the water outlet valve and the water inlet valve at the two sides thereof are started to cooperate with the operation of the circulation pump 61, so that the heat at the position of the heat conducting plate 4 is dissipated to the external environment through the circulation of the cooling water solution 511 in the circulation pipe 6, and the temperature level inside the cabinet 1 is ensured;
s4, frequency conversion regulation: in the cooling process in S2-S3, the operating powers of the heat dissipation fan 21 and the centrifugal fan 11 are adjusted according to the monitored temperature curve change, so that the temperature change inside the cabinet body 1 is maintained within a set fluctuation range, and the energy consumption required for maintaining the temperature level of the power distribution cabinet is reduced.
When the heat-insulating water tank works, the diaphragm plate 51 arranged in the insulating shell 5 is driven by the oil cylinder 52 to bring the cavity space change of the cooling water 511, so that the cavity pressure of the cooling water is changed, the heat-conducting plate 4 is in a state similar to adiabatic expansion when absorbing heat, and after the cooling water 511 flows back, the volume of the diaphragm plate 51 compressed and recovered in the insulating shell 5 plays a heat effect process similar to adiabatic expansion in Carnot cycle, the heat exchange ratio of the cooling water 511 is improved, and the temperature control function in the tank body 1 is ensured; shallow slot 41 that sets up on the bottom surface of heat-conducting plate 4, make the air current that contacts heat-conducting plate 4 along the cambered surface of shallow slot 41 upwards escape in week, avoid the air current that turns back from heat-conducting plate 4 to interfere the air current that blows out in the heat dissipation fan 21, dredge the gas of the inside higher temperature of cabinet body 1 and flow to the heat-conducting plate 4 at top from the heat dissipation fan 21 in its middle part, subside from the cabinet body 1 lateral wall of shallow slot 41 circumference again after the cooling, maintain the circulation state of the internal air current of cabinet body 1, and upright set up fin 42 has strengthened the mediation effect to the air current, make the air current of cooling in the cabinet body 1 be in balanced distribution state in the settlement process, ensure the thermal conduction effect in the cabinet body 1; the circulating pipe 6 at the bottom of the cabinet body 1 is deformed into a flat shape, the surface area of the circulating pipe 6 is enhanced, the centrifugal fan 11 arranged at the bottom of the cabinet body 1 is matched, so that the airflow blown to the circulating pipe 6 by the air port 111 generates a negative pressure area at the bottom of the cabinet body 1, and the air in the environment is guided to the circulating pipe 6 under the action of negative pressure in the gap between the air port 111 and the circulating pipe 6, the air quantity at the circulating pipe 6 is increased, the lower height of the lower-temperature air in the environment is utilized, the heat exchange capacity of the circulating pipe 6 on the cooling water solution 511 is further enhanced, and the cooling effect on the interior of the cabinet body 1 is maintained; the sealing plaster 123 arranged in the through hole 12 recovers the sealing performance of the cabinet body 1, the laminated sheet 121 arranged on the through hole 12 is rotated in the ring 122 to change the size of the annular opening of the laminated sheet 121, the posture of the cable line penetrating through the through hole 12 is kept, the adhesion area of the filled sealing plaster 123 is increased, and the stability of the plaster in the through hole 12 is enhanced; the setting is at the rubber ring 13 of cabinet body 1 door frame department shell structure, cooperate the opening 131 that sets up on it, the deformation that makes rubber ring 13 provides the surplus of breathing for the gas of the internal portion of cabinet 1, when keeping the internal portion of cabinet 1 to be in airtight state, the airtight problem that the internal gas breathing of cabinet 1 influences sealed daub 123 structure has been weakened, and cabinet door 14 utilizes its ascending sand grip 141 in week, it still has the space of deformation to ensure rubber ring 13 on the closed back cabinet body 1, make the internal component of cabinet body 1 be in stable encapsulated situation when the operation, and then maintain the control accuracy to the internal temperature of cabinet body 1.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. An intelligent power distribution cabinet comprises a cabinet body (1), a wire row (2) and a controller; a wire row (2) for assembling cables is arranged in the cabinet body (1), a heat dissipation fan (21) is further installed in the cabinet body (1) above the wire row (2), and a sensor for monitoring the temperature of the wire row (2) is further installed in the wire row (2); an interactive display screen (3) is also arranged in the cabinet body (1); the method is characterized in that: a heat conducting plate (4) is arranged at the top end of the inner wall of the cabinet body (1), and an insulating shell (5) is further installed on the heat conducting plate (4) towards the outer side of the cabinet body (1); the insulation shell (5) is in close contact with the heat conduction plate (4) to form a cavity, a sliding diaphragm plate (51) is further arranged in the insulation shell (5), the diaphragm plate (51) divides the interior of the insulation shell (5) into an upper cavity and a lower cavity which are independent, and cooling water solution (511) is filled in the cavities; the top of the insulating shell (5) is provided with an oil cylinder (52), and the oil cylinder (52) is used for driving the diaphragm plate (51) to move in the insulating shell (5); the two sides of the cavity of the insulating shell (5) are respectively communicated with a one-way water outlet valve and a one-way water inlet valve, and the water outlet valve and the water inlet valve are provided with communicated circulating pipes (6) on the outer side of the insulating shell (5); the circulating pipe (6) is attached to the surface of the cabinet body (1), the circulating pipe (6) wraps the cabinet body (1) in a U shape, and the circulating pipe (6) is also provided with a circulating pump (61) at the bottom of the cabinet body (1); the controller is used for adjusting the operation of the power distribution cabinet.
2. The intelligent power distribution cabinet according to claim 1, characterized in that: the bottom surface of the heat conducting plate (4) is also provided with an arc-shaped shallow groove (41), and the shallow groove (41) corresponds to the position of the heat radiating fan (21) in the cabinet body (1); a flat end surface is also left between the edges of the shallow groove (41) and the heat conducting plate (4), and the heat conducting plate (4) is provided with standing fins (42) on the flat end surface of the edge.
3. The intelligent power distribution cabinet according to claim 1, characterized in that: the bottom of the cabinet body (1) is also provided with a centrifugal fan (11), and an air port (111) of the centrifugal fan (11) faces the surface of the circulating pipe (6) at the bottom of the cabinet body (1); the circulating pipe (6) is flat at the bottom of the cabinet body (1), and a gap is reserved between the surface of the circulating pipe (6) and the air opening (111).
4. The intelligent power distribution cabinet according to claim 3, characterized in that: the cabinet body (1) is also provided with a through hole (12) for installing a cable, and the through hole (12) is provided with an annular lamination (121); the edge of the lamination (121) is also provided with a rotary ring (122), the lamination (121) is fixed on the through hole (12) through the ring (122), and the size of the through hole (12) is matched with the cable by adjusting the overlapping state of the lamination (121); and sealing mastic (123) is filled between the gap between the through opening (12) and the cable.
5. The intelligent power distribution cabinet according to claim 4, wherein: a fixed rubber ring (13) is further arranged on a door frame of the cabinet body (1), the rubber ring (13) is of a shell structure, and an opening (131) is formed in the direction facing a cabinet door (14) of the cabinet body (1); convex strips (141) are further arranged on the circumferential direction of the cabinet door (14), and the cabinet door (14) stretches into the opening (131) of the rubber ring (13) through the convex strips (141) in a closed state.
6. A method for monitoring a power distribution cabinet is characterized in that; the method for monitoring the power distribution cabinet is applicable to the intelligent power distribution cabinet in any one of claims 1-5, and comprises the following steps:
s1, power configuration: the state of the power distribution cabinet in the operation process is fed back to the interactive display screen (3), and in the process of the power distribution cabinet for configuring and changing the circuit power, the temperature parameters measured under different powers are recorded by the sensors arranged in the line bank (2), so that temperature change curves of the power distribution cabinet in different operation states are formed;
s2, heat accumulation cycle: when the temperature change curve measured in the S1 is used and the temperature of the sensor is monitored to rise to the early warning threshold value, the heat dissipation fan (21) in the cabinet body (1) is started, so that the gas heated in the wire row (2) area circulates in the cabinet body (1), when the airflow contacts the heat conduction plate (4) at the top of the cabinet body (1), the heat in the airflow is conducted to the cooling water solution (511), and the temperature level in the cabinet body (1) is maintained;
s3, heat effect conduction: in the heat accumulation circulation process in S2, when the temperature curve is monitored to be still in a rising state, a centrifugal fan (11) at the bottom of the cabinet body (1), an oil cylinder (52) on an insulating shell (5), a water outlet valve and a water inlet valve at two sides of the oil cylinder are started, and the operation of a circulating pump (61) is matched, so that the heat at the position of a heat conducting plate (4) is dissipated to the external environment through the circulation of a cooling water solution (511) in a circulating pipe (6), and the temperature level in the cabinet body (1) is ensured;
s4, frequency conversion regulation: in the cooling process in S2-S3, the operation power of the heat dissipation fan (21) and the centrifugal fan (11) is adjusted according to the monitored temperature curve change, so that the temperature change in the cabinet body (1) is maintained in a set fluctuation range, and the energy consumption required for maintaining the temperature level of the power distribution cabinet is reduced.
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| CN112952623B (en) | 2022-08-23 |
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